8 Application and Implementation

Note

Information in the following applications sections is not part of the TI component specification,

and TI does not warrant its accuracy or completeness. TI’s customers are responsible for

determining suitability of components for their purposes, as well as validating and testing their design

implementation to confirm system functionality.

8.1 Application Information

Multiple SN74LVC1G175B-EP devices can be used in tandem to create a shift register of arbitrary length. In this

example, we use four SN74LVC1G175B-EP devices to form a 4-bit serial shift register. By connecting all CLK

inputs to a common clock pulse and tying each output of one device to the next, we can store and load 4-bit

values on demand. We demonstrate loading the 4 bit value 1101 into memory by setting Serial Input Data to

each desired memory bit, and by sending a clock pulse for each bit, we sequentially move all stored bits from left

to right

(A → B → C → D)

8.2 Typical Application

Flip-Flop

A

VCC

D

Q

CLK

GND

Clock

pulse

Serial

Input Data

Flip-Flop

B

VCC

D

Q

CLK

GND

Flip-Flop

C

VCC

D

Q

CLK

GND

Flip-Flop

D

VCC

D

Q

CLK

GND

Serial

Output Data

VCC

Figure 8-1. 4-Bit Serial Shift Register

8.2.1 Design Requirements

The SN74LVC1G175B-EP device uses CMOS technology and has balanced output drive. Take care to avoid

bus contention because it can drive currents that can exceed maximum limits.

The SN74LVC1G175B-EP allows switching control of analog and digital signals with a digital control signal. All

input signals must remain as close as possible to either 0V or VCC for peak operation.

8.2.1.1 Power Considerations

Verify that the desired supply voltage is within the range specified in the Electrical Characteristics. The supply

voltage sets the device electrical characteristics, as described in the Electrical Characteristics section.

The positive voltage supply must be capable of sourcing current equal to the total current to be sourced by

all outputs of the SN74LVC1G175B-EP plus the maximum static supply current, ICC, listed in the Electrical

Characteristics, and any transient current required for switching. The logic device can only source as much

current that is provided by the positive supply source. Verify that the maximum total current through VCC listed in

the Absolute Maximum Ratings is not exceeded.

The ground must be capable of sinking current equal to the total current to be sunk by all outputs of the

SN74LVC1G175B-EP plus the maximum supply current, ICC, listed in the Electrical Characteristics, and any

transient current required for switching. The logic device can only sink as much current that can be sunk into the

ground connection. Verify that the maximum total current through GND listed in the Absolute Maximum Ratings

is not exceeded.

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SN74LVC1G175B-EP

SLVSL43 – MARCH 2026

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